Add a %pF to the kgsl_fire_event tracepoint to show which function is being called when the event expired. This will help debugging when something goes bad in the callback which isn't always intuitive from a stack trace. Change-Id: Ic0dedbad41bdceefb29cec2730036620d2e4d8f3 Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Ling Wan <lingw@codeaurora.org>